| Company | Timeline | Status | |
| Knowles Waterproofing Limited Director • Director | 15 Dec 2022←2 Years 10 Months→Current | Active | |
| K Piling Limited Director • Quantity Surveyor | 20 Aug 2021←4 Years→Current | Active | |
| Knowles Property Group 2 Limited Director • Quantity Surveyor | 21 Sep 2020←5 Years→Current | Active | |
| Knowles Property Group Limited Director • Quantity Surveyor | 21 Jan 2020←5 Years→Current | Active | |
| K Plant Hire Limited Director • Quantity Surveyor | 5 Nov 2019←5 Years→Current | Active | |
| Knowles Holdings Limited Director • Director | 4 Sep 2019←6 Years→Current | Active | |
| Autocave Limited Director • Quantity Surveyor | 3 Jul 2019←6 Years→Current | Active | |
| Knowles Land Limited Director • Quantity Surveyor | 6 Mar 2019←6 Years→Current | Active | |
| Henleyroad Limited Director • Quantity Surveyor | 6 Mar 2019←6 Years→Current | Active | |
| Knowles Construction Ltd Director • Quantity Surveyor | 26 Oct 2015←10 Years→Current | Active | |
